DS/ISO 13851:2019

Safety of machinery - Two-hand control devices - Principles for design and selection

This European Standard specifies the safety requirements of a two-hand control device and the dependency of the output signal from the input signals and describes the main characteristics of two-hand control devices for the achievement of safety and sets out combinations of functional characteristics for three types. It does not apply to devices intended to be used as enabling devices, as hold-to-run devices or as special control devices. This European Standard provides requirements and guidance on the design and selection (based on a risk assessment) of two-hand control devices including their assessment, the prevention of defeat and the avoidance of faults. It also provides requirements and guidance for two-hand control devices containing a programmable electronic system. It applies to all two-hand control devices, independent of the energy used, including two-hand control devices which are or are not integral parts of a machine and two-hand control devices which consist of one or more than one separate element.